Example usage for org.apache.zookeeper WatchedEvent getPath

Introduction

In this page you can find the example usage for org.apache.zookeeper WatchedEvent getPath.

Prototype

public String getPath() 

Source Link

Usage

From source file:org.apache.solr.common.cloud.ConnectionManager.java

License:Apache License

@Override
public synchronized void process(WatchedEvent event) {
    if (log.isInfoEnabled()) {
        log.info("Watcher " + this + " name:" + name + " got event " + event + " path:" + event.getPath()
                + " type:" + event.getType());
    }/*from   w w  w  . jav a  2s . com*/

    if (isClosed) {
        log.info("Client->ZooKeeper status change trigger but we are already closed");
        return;
    }

    state = event.getState();
    if (state == KeeperState.SyncConnected) {
        connected = true;
        clientConnected.countDown();
        connectionStrategy.connected();
    } else if (state == KeeperState.Expired) {
        connected = false;
        log.info(
                "Our previous ZooKeeper session was expired. Attempting to reconnect to recover relationship with ZooKeeper...");

        try {
            connectionStrategy.reconnect(zkServerAddress, zkClientTimeout, this,
                    new ZkClientConnectionStrategy.ZkUpdate() {
                        @Override
                        public void update(SolrZooKeeper keeper) {
                            try {
                                waitForConnected(Long.MAX_VALUE);
                            } catch (Exception e1) {
                                closeKeeper(keeper);
                                throw new RuntimeException(e1);
                            }

                            log.info("Connection with ZooKeeper reestablished.");
                            try {
                                client.updateKeeper(keeper);
                            } catch (InterruptedException e) {
                                closeKeeper(keeper);
                                Thread.currentThread().interrupt();
                                // we must have been asked to stop
                                throw new RuntimeException(e);
                            } catch (Throwable t) {
                                closeKeeper(keeper);
                                throw new RuntimeException(t);
                            }

                            if (onReconnect != null) {
                                onReconnect.command();
                            }

                            synchronized (ConnectionManager.this) {
                                ConnectionManager.this.connected = true;
                            }

                        }
                    });
        } catch (Exception e) {
            SolrException.log(log, "", e);
        }
        log.info("Connected:" + connected);
    } else if (state == KeeperState.Disconnected) {
        log.info("zkClient has disconnected");
        connected = false;
        connectionStrategy.disconnected();
    } else {
        connected = false;
    }
    notifyAll();
}

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From source file:org.apache.storm.zookeeper.Zookeeper.java

License:Apache License

public CuratorFramework mkClientImpl(Map conf, List<String> servers, Object port, String root,
        final WatcherCallBack watcher, Map authConf) {
    CuratorFramework fk;/*  w  ww.j  ava2s .  co m*/
    if (authConf != null) {
        fk = Utils.newCurator(conf, servers, port, root, new ZookeeperAuthInfo(authConf));
    } else {
        fk = Utils.newCurator(conf, servers, port, root);
    }

    fk.getCuratorListenable().addListener(new CuratorListener() {
        @Override
        public void eventReceived(CuratorFramework _fk, CuratorEvent e) throws Exception {
            if (e.getType().equals(CuratorEventType.WATCHED)) {
                WatchedEvent event = e.getWatchedEvent();
                watcher.execute(event.getState(), event.getType(), event.getPath());
            }
        }
    });
    fk.start();
    return fk;
}

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From source file:org.bboxdb.distribution.mode.KDtreeZookeeperAdapter.java

License:Apache License

@Override
public void process(final WatchedEvent event) {

    // Ignore events like connected and disconnected
    if (event == null || event.getPath() == null) {
        return;/* w w w .  j  a v  a 2  s  .  c  om*/
    }

    final String path = event.getPath();

    if (path.equals(distributionGroupZookeeperAdapter.getClusterPath())) {
        // Amount of distribution groups have changed
        readAndHandleVersionNE();
    } else if (path.endsWith(ZookeeperNodeNames.NAME_SYSTEMS)) {
        // Some systems were added or deleted
        handleSystemNodeUpdateEvent(event);
    } else if (path.endsWith(ZookeeperNodeNames.NAME_STATE)) {
        // The state of one has changed
        handleNodeUpdateEvent(event);
    } else {
        logger.info("Ingoring event for path: {}", path);
    }
}

---

From source file:org.bboxdb.distribution.mode.KDtreeZookeeperAdapter.java

License:Apache License

/**
 * Handle node updates// ww w .  j a v a 2s .c o m
 * @param event
 */
protected void handleNodeUpdateEvent(final WatchedEvent event) {

    if (rootNode == null) {
        logger.debug("Ignore systems update event, because root not node is null: {}", distributionGroup);
        return;
    }

    // Remove state node from path
    final String path = event.getPath().replace("/" + ZookeeperNodeNames.NAME_STATE, "");

    final DistributionRegion nodeToUpdate = distributionGroupZookeeperAdapter.getNodeForPath(rootNode, path);

    try {
        if (!distributionGroupZookeeperAdapter
                .isDistributionGroupRegistered(rootNode.getDistributionGroupName().getFullname())) {
            logger.info("Distribution group was unregistered, ignore event");
            return;
        }

        readDistributionGroupRecursive(path, nodeToUpdate);
    } catch (ZookeeperException e) {
        logger.warn("Got exception while updating node for: " + path, e);
    }
}

---

From source file:org.bboxdb.distribution.mode.KDtreeZookeeperAdapter.java

License:Apache License

/**
 * Handle system update events//from   w  ww.j  a  va 2  s.co  m
 * @param event
 */
protected void handleSystemNodeUpdateEvent(final WatchedEvent event) {

    if (rootNode == null) {
        logger.debug("Ignore systems update event, because root not node is null: {}", distributionGroup);
        return;
    }

    final String path = event.getPath().replace("/" + ZookeeperNodeNames.NAME_SYSTEMS, "");

    final DistributionRegion nodeToUpdate = distributionGroupZookeeperAdapter.getNodeForPath(rootNode, path);

    try {
        updateSystemsForRegion(nodeToUpdate);
    } catch (ZookeeperException e) {
        logger.warn("Got exception while updating systems for: " + path, e);
    }
}

---

From source file:org.bboxdb.distribution.zookeeper.ZookeeperClient.java

License:Apache License

/**
 * Process zooekeeper events//w  w w .  j a va2  s .c  om
 * @param watchedEvent
 */
protected void processZookeeperEvent(final WatchedEvent watchedEvent) {
    // Ignore null parameter
    if (watchedEvent == null) {
        logger.warn("process called with an null argument");
        return;
    }

    // Shutdown is pending, stop event processing
    if (shutdownPending == true) {
        return;
    }

    // Ignore type=none event
    if (watchedEvent.getType() == EventType.None) {
        return;
    }

    // Process events
    if (watchedEvent.getPath() != null) {
        if (watchedEvent.getPath().startsWith(getInstancesPath())) {
            readMembershipAndRegisterWatch();
        }
    } else {
        logger.warn("Got unknown zookeeper event: {}", watchedEvent);
    }
}

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From source file:org.eclipse.ecf.provider.zookeeper.node.internal.ReadRoot.java

License:Open Source License

public void process(final WatchedEvent event) {
    ZooDiscoveryContainer.CACHED_THREAD_POOL.execute(new Runnable() {
        public void run() {
            synchronized (connectionLock) {
                if (watchManager.isDisposed())
                    return;

                switch (event.getState()) {
                case Disconnected:
                    ReadRoot.this.isConnected = false;
                    connect();/*from   w  w w .j  a  v  a2 s  .  co m*/
                    break;
                case Expired:
                    ReadRoot.this.isConnected = false;
                    connect();
                    break;
                case SyncConnected:
                    if (!ReadRoot.this.isConnected) {
                        ReadRoot.this.isConnected = true;
                        ReadRoot.this.watchManager.addZooKeeper(ReadRoot.this.readKeeper);
                        ReadRoot.this.readKeeper.exists(INode.ROOT, ReadRoot.this, null, null);
                        ReadRoot.this.readKeeper.getChildren(INode.ROOT, ReadRoot.this, ReadRoot.this, null);
                    }
                    break;

                // ignore @deprecated cases
                }
                switch (event.getType()) {
                case NodeDeleted:
                    if (event.getPath() == null || event.getPath().equals(INode.ROOT))
                        break;
                    ReadRoot.this.nodeReaders.remove(event.getPath());
                    break;
                case NodeChildrenChanged:
                    if (ReadRoot.this.isConnected) {
                        ReadRoot.this.readKeeper.exists(INode.ROOT, ReadRoot.this, null, null);
                        ReadRoot.this.readKeeper.getChildren(INode.ROOT, ReadRoot.this, ReadRoot.this, null);
                    }
                    break;
                }
            }
        }
    });
}

---

From source file:org.eclipse.gyrex.cloud.internal.zk.ZooKeeperMonitor.java

License:Open Source License

@Override
public void process(final WatchedEvent event) {
    switch (event.getType()) {
    case NodeChildrenChanged:
        childrenChanged(event.getPath());
        break;//from   www .  ja  v a2 s .  c o  m
    case NodeCreated:
        pathCreated(event.getPath());
        break;
    case NodeDeleted:
        pathDeleted(event.getPath());
        break;
    case NodeDataChanged:
        recordChanged(event.getPath());
        break;
    case None:
        // state of the connection changed
        // TODO: how to handle/consume this event here?
        // our prefered way of working with ZK connect/disconnect/expired events
        // is using the ZKGate which has it's own connect listener (integrated into ZKBasedService)
        //         switch (event.getState()) {
        //            case SyncConnected:
        //               // connection established, nothing to do because watches
        //               // will be automatically re-registered and delivered by ZooKeeper
        //               connected();
        //               break;
        //            case Disconnected:
        //               // session disconnected, the gate will recover
        //               disconnected();
        //               break;
        //            case Expired:
        //               // session expired, the gate will close
        //               expired();
        //               break;
        //         }
        break;
    default:
        LOG.warn("Unhandled event ({}) in ({})", new Object[] { event, this });
        break;
    }
}

---

From source file:org.glassfish.grizzly.memcached.zookeeper.ZKClient.java

License:Open Source License

private boolean processStateChanged(final WatchedEvent event) {
    if (event == null) {
        throw new IllegalArgumentException("event must not be null");
    }/*from   w  ww  .j a  v  a2 s  .  c  om*/
    final Watcher.Event.KeeperState eventState = event.getState();
    final String eventPath = event.getPath();
    final boolean isStateChangedEvent;
    // state changed
    if (eventPath == null) {
        lock.lock();
        try {
            currentState = eventState;
            lockCondition.signalAll();
        } finally {
            lock.unlock();
        }
        isStateChangedEvent = true;
    } else {
        isStateChangedEvent = false;
    }
    if (eventState == Watcher.Event.KeeperState.Expired) {
        try {
            reconnect();
        } catch (Exception e) {
            if (logger.isLoggable(Level.SEVERE)) {
                logger.log(Level.SEVERE, "failed to reconnect the zookeeper server", e);
            }
        }
    }
    return isStateChangedEvent;
}

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From source file:org.hummer.config.WatcherAdapter.java

License:Apache License

public void process(WatchedEvent event) {
    WatchEvent evt = new WatchEvent();
    evt.setState(event.getState().getIntValue());
    evt.setType(event.getType().getIntValue());
    evt.setArg(event.getPath());
    innerWatcher.onEvent(evt);//from w w w  . ja  v  a 2 s .c om
}

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